Sand louver



FIG. 1 is a perspective view.

FIG. 2 is a side view of FIG. 1.

FIG. 3 is a rear elevation view.

FIG. 4 is a front elevation view.

FIG. 5 is a bottom plan view; and,

FIG. 6 is a top plan view. 

The ornamental design for a sand louver, as shown and described. 